Question

Solve for x
Ps: please be ask Descriptive as possible, so I can learn how to do this Thanks!

Answer 1

first you multiply both sides by 10, add 40, divide by 4, then square root

10*(4x^2-40/10)= (36)*10
(4x^2-40)+40=(360)+40
(4x^2)/4=(400)/4
x^2=100
x=10